CVE-2020-28998 : Security Advisory and Response

An issue was discovered on Geeni GNC-CW013 doorbell 1.8.1 devices, where a vulnerability in the Telnet service allows remote attackers to gain full control of the device using a high-privileged account due to a default and static password.

Understanding CVE-2020-28998

This CVE identifies a critical security vulnerability in Geeni GNC-CW013 doorbell 1.8.1 devices.

What is CVE-2020-28998?

The vulnerability in the Telnet service of the Geeni GNC-CW013 doorbell 1.8.1 devices enables unauthorized remote access with high privileges, compromising the device's security.

The Impact of CVE-2020-28998

The vulnerability permits malicious actors to exploit the Telnet service, potentially leading to unauthorized access and complete control over the affected device.

Technical Details of CVE-2020-28998

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The flaw in the Telnet service allows remote attackers to exploit a default and static password associated with a system account, granting them full control over the device.

Affected Systems and Versions

Product: Geeni GNC-CW013 doorbell 1.8.1
Vendor: Geeni
Version: 1.8.1

Exploitation Mechanism

The vulnerability can be exploited remotely by leveraging the Telnet service and the static password associated with a system account.

Mitigation and Prevention

Protecting against CVE-2020-28998 requires immediate action and long-term security measures.

Immediate Steps to Take

Disable Telnet service if not required for device functionality.
Change default passwords to strong, unique ones.
Implement network segmentation to restrict unauthorized access.

Long-Term Security Practices

Regularly update device firmware to patch known vulnerabilities.
Conduct security audits and penetration testing to identify weaknesses.

Patching and Updates

Check for security updates from the vendor and apply them promptly to mitigate the vulnerability.